isn't

英 [ˈɪznt]

美 [ˈɪznt]

is not 的常用口语形式

Collins.5

柯林斯词典

This isn't highfalutin art-about-art. It's marvellous and adventurous stuff.
这不是一件纯粹为艺术而艺术的华而不实的东西，而是进行了大胆创新的非凡作品。
My bank balance isn't very large.
我的银行存款余额不多了。
He just isn't in your league.
他和你根本不是同类型的人。
It isn't too difficult once you get the idea
你一旦弄懂了，就不太难了。
She's quite pretty, isn't she?
她长得挺美，不是吗？
Isn't he just the most beautiful thing you ever saw?
他难道不是你见过的最美的事物么？
Isn't it fantastic? Just look at that!
这是不是棒极了？看看那个！
But my world isn't your world, more's the pity.
可惜的是，我们是两个世界的人。
Awfully hot, isn't it?
非常热，是不是？
Isn't it about time that you pulled your finger out?
现在到了你该赶紧动起来的时候了吧？